CN105414182A - Rolling method of bright thin tungsten chip - Google Patents
Rolling method of bright thin tungsten chip Download PDFInfo
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- CN105414182A CN105414182A CN201511016808.XA CN201511016808A CN105414182A CN 105414182 A CN105414182 A CN 105414182A CN 201511016808 A CN201511016808 A CN 201511016808A CN 105414182 A CN105414182 A CN 105414182A
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- alkali cleaning
- leaf
- temperature
- rolling
- tungsten chip
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/40—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling foils which present special problems, e.g. because of thinness
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0269—Cleaning
- B21B45/0272—Cleaning compositions
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a rolling method of bright thin tungsten chip. The rolling method comprises the following steps: (1) a tungsten chip is put in high-temperature oil for heating; and the heated tungsten chip is rolled for many times; (2) the tungsten chip rolled for many times is deoiled, is destressed and annealed, and is washed by alkali; (3) the tungsten chip, washed by the alkali, is put in the high-temperature oil for heating; and the heated tungsten chip is rolled for many times to obtain a tungsten chip with a thickness of 0.08-0.10 mm; and (4) the tungsten chip rolled for many times is deoiled, is destressed and annealed, and is washed by alkali to obtain a thin tungsten chip with a bright surface. The rolling method is free of needing to spray rolling lubricant, so that the problem of influence on the surface roughness and the surface consistency of the thin tungsten chip due to existence of microcosmic graphite pits in the surface caused by the formation of a graphite layer through spraying aquadag lubricant is prevented; and the rolled thin tungsten chip shows a metal color on the surface, and is excellent in brightness, low in production cost and high in efficiency.
Description
Technical field
The invention belongs to refractory metal material processing technique field, be specifically related to a kind of milling method of bright thin tungiten plate.
Background technology
Tungsten has excellent heat endurance, high-temperature behavior and ray absorption capacity, is widely used in the industries such as medical treatment, electric light source, electronics.Traditional thin tungiten plate milling method all needs graphite spraying breast lubricant.
China Patent No. 200510132733.1 discloses " a kind of milling method of thin tungiten plate ", 200710179667.2 discloses " a kind of milling method of little roughness high brightness thin tungiten plate " and China Patent No. 200410103517.X discloses " a kind of high-precision tungsten piece preparation method ", above patent all needs improve surface lubrication to leaf surface spraying aquadag and toasted the leaf being coated with aquadag by hydrogen Injection type heating furnace, then is rolled.But, because the abundant ablation of organic media that the aquadag of spraying is inner after drying is decomposed, form comparatively fine and close graphite linings under pressure, be difficult to perpendicular to sheet graphite on the direction in the face of rolling move, cause surface to there is microcosmic graphite load mould, affect tungsten sheet surface roughness and surface conformance.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned the deficiencies in the prior art, provides a kind of milling method of bright thin tungiten plate.The method does not need to spray rolling lubricant, avoid the graphite linings formed due to graphite spraying breast lubricant to cause surface to there is microcosmic graphite load mould and affect the problem of tungsten sheet surface roughness and surface conformance, adopt the thin tungiten plate surface metal luster of the method rolling, brightness is good, and production cost is low, efficiency is high.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of milling method of bright thin tungiten plate, is characterized in that, comprise the following steps:
Step one, be that to be placed in temperature be that the high temperature oil of 300 DEG C ~ 350 DEG C heats for the leaf of 0.25mm ~ 0.3mm by thickness, then multi-pass rolling carried out to the leaf after heating; The general working rate of described rolling is 44% ~ 50%;
Step 2, oil removal treatment is carried out to the leaf in step one after multi-pass rolling, then carry out stress relief annealing process, then carry out alkali cleaning;
Step 3, the leaf in step 2 after alkali cleaning to be placed in temperature be that the high temperature oil of 300 DEG C ~ 350 DEG C heats, then multi-pass rolling is carried out to the leaf after heating, the pass reduction of rolling is 1% ~ 3%, obtains the leaf that thickness is 0.08mm ~ 0.10mm;
Step 4, oil removal treatment is carried out to the leaf in step 3 after multi-pass rolling, then carry out stress relief annealing, then carry out alkali cleaning, obtain the thin tungiten plate of surface-brightening.
The milling method of above-mentioned a kind of bright thin tungiten plate, is characterized in that, the pass reduction of rolling in step one is 7% ~ 10%.
The milling method of above-mentioned a kind of bright thin tungiten plate, is characterized in that, the temperature of the process of stress relief annealing described in step 2 is 820 DEG C ~ 830 DEG C, and temperature retention time is 15min ~ 20min.
The milling method of above-mentioned a kind of bright thin tungiten plate, is characterized in that, alkali cleaning described in step 2 adopts mass concentration to be the sodium hydroxide solution of 10% ~ 15%, and the temperature of alkali cleaning is 80 DEG C ~ 100 DEG C, and the time of alkali cleaning is 20s ~ 40s.
The milling method of above-mentioned a kind of bright thin tungiten plate, is characterized in that, in step 3, the road number of times of multi-pass rolling is no less than 20 passages.
The milling method of above-mentioned a kind of bright thin tungiten plate, is characterized in that, the temperature of the process of stress relief annealing described in step 4 is 820 DEG C ~ 830 DEG C, and temperature retention time is 15min ~ 20min.
The milling method of above-mentioned a kind of bright thin tungiten plate, is characterized in that, alkali cleaning described in step 4 adopts mass concentration to be the sodium hydroxide solution of 10% ~ 15%, and the temperature of alkali cleaning is 80 DEG C ~ 100 DEG C, and the time of alkali cleaning is 20s ~ 40s.
The present invention compared with prior art has the following advantages:
1, milling method of the present invention does not need to spray rolling lubricant, avoids the graphite linings formed due to graphite spraying breast lubricant and causes surface to there is microcosmic graphite load mould and affect the problem of tungsten sheet surface roughness and surface conformance.
2, the present invention adopts high temperature oil to heat, and adopts larger pass reduction rolling, be conducive to the raising of production efficiency during first stage rolling; Second stage rolling adopts less working modulus rolling, ensure that thin tungiten plate surface quality uniformity well also can reach lower roughness.
2, adopt the thin tungiten plate surface metal luster of the inventive method rolling, brightness is good, and production cost is low, and efficiency is high.
Below by embodiment, technical solution of the present invention is described in further detail.
Detailed description of the invention
Embodiment 1
It is raw material that the present embodiment adopts the thickness of common process rolling to be the leaf of 0.3mm, and the bright thin tungiten plate that thickness is 0.085mm is prepared in rolling, and concrete grammar comprises the following steps:
Step one, be that to be placed in temperature be that the high temperature oil of 300 DEG C heats for the leaf of 0.3mm by thickness, then carrying out 8 passes to thickness to the leaf being heated to 300 DEG C is 0.15mm, and the pass reduction of rolling is followed successively by 10%, 10%, 9%, 8%, 8%, 7%, 7% and 7%;
Step 2, oil removal treatment is carried out to the leaf after rolling in step one, then carry out stress relief annealing process, then carry out alkali cleaning; The temperature of described stress relief annealing process is 820 DEG C, and temperature retention time is 20min; Described alkali cleaning adopts mass concentration to be the sodium hydroxide solution of 10%, and the temperature of alkali cleaning is 100 DEG C, and the time of alkali cleaning is 20s;
Step 3, the leaf in step 2 after alkali cleaning to be placed in temperature be that the high temperature oil of 300 DEG C heats, then 20 passes are carried out to the leaf being heated to 300 DEG C, 1st passage is 3% to the pass reduction of the 18th passes, the pass reduction of the 19th passage and the 20th passes is 1%, obtains the leaf that thickness is 0.085mm;
Step 4, oil removal treatment is carried out to the leaf in step 3 after multi-pass rolling, then carry out stress relief annealing, then carry out alkali cleaning, obtain the thin tungiten plate that thickness is the surface-brightening of 0.085mm; The temperature of described stress relief annealing process is 820 DEG C, and temperature retention time is 20min; Described alkali cleaning adopts mass concentration to be the sodium hydroxide solution of 10%, and the temperature of alkali cleaning is 100 DEG C, and the time of alkali cleaning is 20s.
Embodiment 2
It is raw material that the present embodiment adopts the thickness of common process rolling to be the leaf of 0.25mm, and the bright thin tungiten plate that thickness is 0.08mm is prepared in rolling, and concrete grammar comprises the following steps:
Step one, be that to be placed in temperature be that the high temperature oil of 350 DEG C heats for the leaf of 0.25mm by thickness, then carrying out 6 passes to thickness to the leaf being heated to 350 DEG C is 0.14mm, and the pass reduction of rolling is followed successively by 10%, 10%, 10%, 9%, 8% and 8%;
Step 2, oil removal treatment is carried out to the leaf after rolling in step one, then carry out stress relief annealing process, then carry out alkali cleaning; The temperature of described stress relief annealing process is 830 DEG C, and temperature retention time is 15min; Described alkali cleaning adopts mass concentration to be the sodium hydroxide solution of 15%, and the temperature of alkali cleaning is 80 DEG C, and the time of alkali cleaning is 40s;
Step 3, the leaf in step 2 after alkali cleaning to be placed in temperature be that the high temperature oil of 350 DEG C heats, then 24 passes are carried out to the leaf being heated to 350 DEG C, 1st passage is 3% to the pass reduction of the 13rd passes, 14th passage is 2% to the pass reduction of the 18th passes, 18th passage is 1% to the pass reduction of the 24th passes, obtains the leaf that thickness is 0.08mm;
Step 4, oil removal treatment is carried out to the leaf in step 3 after multi-pass rolling, then carry out stress relief annealing, then carry out alkali cleaning, obtain the thin tungiten plate that thickness is the surface-brightening of 0.08mm; The temperature of described stress relief annealing process is 825 DEG C, and temperature retention time is 18min; Described alkali cleaning adopts mass concentration to be the sodium hydroxide solution of 12%, and the temperature of alkali cleaning is 90 DEG C, and the time of alkali cleaning is 40s.
Embodiment 3
It is raw material that the present embodiment adopts the thickness of common process rolling to be the leaf of 0.28mm, and the bright thin tungiten plate that thickness is 0.10mm is prepared in rolling, and concrete grammar comprises the following steps:
Step one, be that to be placed in temperature be that the high temperature oil of 320 DEG C heats for the leaf of 0.28mm by thickness, then carrying out 7 passes to thickness to the leaf being heated to 320 DEG C is 0.15mm, and the pass reduction of rolling is followed successively by 10%, 10%, 9%, 8%, 8%, 7% and 7%;
Step 2, oil removal treatment is carried out to the leaf after rolling in step one, then carry out stress relief annealing process, then carry out alkali cleaning; The temperature of described stress relief annealing process is 825 DEG C, and temperature retention time is 18min; Described alkali cleaning adopts mass concentration to be the sodium hydroxide solution of 12%, and the temperature of alkali cleaning is 90 DEG C, and the time of alkali cleaning is 30s;
Step 3, the leaf in step 2 after alkali cleaning to be placed in temperature be that the high temperature oil of 320 DEG C heats, then 22 passes are carried out to the leaf being heated to 320 DEG C, 1st passage is 3% to the pass reduction of the 4th passes, 5th passage is 2% to the pass reduction of the 14th passes, 15th passage is 1% to the pass reduction of the 22nd passes, obtains the leaf that thickness is 0.10mm;
Step 4, oil removal treatment is carried out to the leaf in step 3 after multi-pass rolling, then carry out stress relief annealing, then carry out alkali cleaning, obtain the thin tungiten plate that thickness is the surface-brightening of 0.10mm; The temperature of described stress relief annealing process is 830 DEG C, and temperature retention time is 15min; Described alkali cleaning adopts mass concentration to be the sodium hydroxide solution of 15%, and the temperature of alkali cleaning is 80 DEG C, and the time of alkali cleaning is 30s.
The above; it is only preferred embodiment of the present invention; not any restriction is done to the present invention, every above embodiment is done according to invention technical spirit any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solution of the present invention.
Claims (7)
1. a milling method for bright thin tungiten plate, is characterized in that, comprises the following steps:
Step one, be that to be placed in temperature be that the high temperature oil of 300 DEG C ~ 350 DEG C heats for the leaf of 0.25mm ~ 0.3mm by thickness, then multi-pass rolling carried out to the leaf after heating; The general working rate of described rolling is 44% ~ 50%;
Step 2, oil removal treatment is carried out to the leaf in step one after multi-pass rolling, then carry out stress relief annealing process, then carry out alkali cleaning;
Step 3, the leaf in step 2 after alkali cleaning to be placed in temperature be that the high temperature oil of 300 DEG C ~ 350 DEG C heats, then multi-pass rolling is carried out to the leaf after heating, the pass reduction of rolling is 1% ~ 3%, obtains the leaf that thickness is 0.08mm ~ 0.10mm;
Step 4, oil removal treatment is carried out to the leaf in step 3 after multi-pass rolling, then carry out stress relief annealing, then carry out alkali cleaning, obtain the thin tungiten plate of surface-brightening.
2. the milling method of a kind of bright thin tungiten plate according to claim 1, is characterized in that, the pass reduction of rolling in step one is 7% ~ 10%.
3. the milling method of a kind of bright thin tungiten plate according to claim 1, is characterized in that, the temperature of the process of stress relief annealing described in step 2 is 820 DEG C ~ 830 DEG C, and temperature retention time is 15min ~ 20min.
4. the milling method of a kind of bright thin tungiten plate according to claim 1, is characterized in that, alkali cleaning described in step 2 adopts mass concentration to be the sodium hydroxide solution of 10% ~ 15%, and the temperature of alkali cleaning is 80 DEG C ~ 100 DEG C, and the time of alkali cleaning is 20s ~ 40s.
5. the milling method of a kind of bright thin tungiten plate according to claim 1, is characterized in that, in step 3, the road number of times of multi-pass rolling is no less than 20 passages.
6. the milling method of a kind of bright thin tungiten plate according to claim 1, is characterized in that, the temperature of the process of stress relief annealing described in step 4 is 820 DEG C ~ 830 DEG C, and temperature retention time is 15min ~ 20min.
7. the milling method of a kind of bright thin tungiten plate according to claim 1, is characterized in that, alkali cleaning described in step 4 adopts mass concentration to be the sodium hydroxide solution of 10% ~ 15%, and the temperature of alkali cleaning is 80 DEG C ~ 100 DEG C, and the time of alkali cleaning is 20s ~ 40s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511016808.XA CN105414182A (en) | 2015-12-29 | 2015-12-29 | Rolling method of bright thin tungsten chip |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511016808.XA CN105414182A (en) | 2015-12-29 | 2015-12-29 | Rolling method of bright thin tungsten chip |
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| CN105414182A true CN105414182A (en) | 2016-03-23 |
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| CN201511016808.XA Pending CN105414182A (en) | 2015-12-29 | 2015-12-29 | Rolling method of bright thin tungsten chip |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109402719A (en) * | 2018-12-14 | 2019-03-01 | 西安瑞福莱钨钼有限公司 | A kind of preparation method of tungsten narrowband foil |
Citations (7)
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|---|---|---|---|---|
| JP2001286926A (en) * | 2000-04-11 | 2001-10-16 | Toyo Seihaku Kk | Squeezing roller and multi roll mill for metallic foil |
| CN1621199A (en) * | 2004-12-30 | 2005-06-01 | 西部金属材料股份有限公司 | High-precision tungsten piece preparation method |
| CN1785542A (en) * | 2005-12-28 | 2006-06-14 | 西部金属材料股份有限公司 | Rolling method of thin tungiten plate |
| CN102389898A (en) * | 2011-11-09 | 2012-03-28 | 无锡乐普金属科技有限公司 | Rolling technology for pure tungsten sheet and device thereof |
| CN102489513A (en) * | 2011-12-30 | 2012-06-13 | 西安超码复合材料公司 | Method for rolling tungsten copper thin plate with high tungsten content |
| CN103468368A (en) * | 2013-09-12 | 2013-12-25 | 广西大学 | Lubricating agent for hot rolling of tungsten and tungsten alloy plates and strips |
| CN103978033A (en) * | 2013-02-07 | 2014-08-13 | 上海六晶金属科技有限公司 | Method for preparing high-flatness pure-tungsten metal sheet |
-
2015
- 2015-12-29 CN CN201511016808.XA patent/CN105414182A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001286926A (en) * | 2000-04-11 | 2001-10-16 | Toyo Seihaku Kk | Squeezing roller and multi roll mill for metallic foil |
| CN1621199A (en) * | 2004-12-30 | 2005-06-01 | 西部金属材料股份有限公司 | High-precision tungsten piece preparation method |
| CN1785542A (en) * | 2005-12-28 | 2006-06-14 | 西部金属材料股份有限公司 | Rolling method of thin tungiten plate |
| CN102389898A (en) * | 2011-11-09 | 2012-03-28 | 无锡乐普金属科技有限公司 | Rolling technology for pure tungsten sheet and device thereof |
| CN102489513A (en) * | 2011-12-30 | 2012-06-13 | 西安超码复合材料公司 | Method for rolling tungsten copper thin plate with high tungsten content |
| CN103978033A (en) * | 2013-02-07 | 2014-08-13 | 上海六晶金属科技有限公司 | Method for preparing high-flatness pure-tungsten metal sheet |
| CN103468368A (en) * | 2013-09-12 | 2013-12-25 | 广西大学 | Lubricating agent for hot rolling of tungsten and tungsten alloy plates and strips |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109402719A (en) * | 2018-12-14 | 2019-03-01 | 西安瑞福莱钨钼有限公司 | A kind of preparation method of tungsten narrowband foil |
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Application publication date: 20160323 |